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Finding the Fourth Proportional to 72,328.99, 99,790.94 and 46,854.88

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Solution

The fourth proportional to 72,328.99, 99,790.94 and 46,854.88 is: 64,644.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,328.99 : 99,790.94 = 46,854.88 : x
  2. Step 2: Convert to fraction form
    72,328.99/99,790.94 = 46,854.88/x
  3. Step 3: Cross multiply
    72,328.99x = 99,790.94 × 46,854.88
  4. Step 4: Simplify right side
    72,328.99x = 4,675,693,121.05
  5. Step 5: Solve for x
    x = 4,675,693,121.05/72,328.99
  6. Step 6: Final answer
    x = 64,644.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.